<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="app"></div>

    <script src="../02_渲染器代码/renderer.js"></script>
    <script src="../03_响应式系统/reactive.js"></script>
    <script src="./index.js"></script>

    <script>
      // 1.创建根组件
      const App = {
        data: reactive({
          counter: 0
        }),
        render() {
          return h('div', null, [
            h('h2', null, `当前计数：${this.data.counter}`),
            h('button', { onClick: () => this.data.counter++ }, '+1')
          ])
        }
      }

      // 2.挂载根组件
      const app = createApp(App)
      app.mount('#app')
    </script>
  </body>
</html>
